/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.bpmn.helper;

import com.je.bpm.engine.delegate.event.ActivitiEntityEvent;
import com.je.bpm.engine.delegate.event.ActivitiEvent;
import com.je.bpm.engine.delegate.event.ActivitiEventListener;

/**
 * Base implementation of a {@link ActivitiEventListener}, used when creating event-listeners that are part of a BPMN definition.
 */
public abstract class BaseDelegateEventListener implements ActivitiEventListener {

    protected Class<?> entityClass;

    public void setEntityClass(Class<?> entityClass) {
        this.entityClass = entityClass;
    }

    protected boolean isValidEvent(ActivitiEvent event) {
        boolean valid = false;
        if (entityClass != null) {
            if (event instanceof ActivitiEntityEvent) {
                Object entity = ((ActivitiEntityEvent) event).getEntity();
                if (entity != null) {
                    valid = entityClass.isAssignableFrom(entity.getClass());
                }
            }
        } else {
            // If no class is specified, all events are valid
            valid = true;
        }
        return valid;
    }

}
